JP2819328B2 - Traveling formwork support - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a traveling form support for supporting and moving an inner form and the like of a box culvert.

(Conventional technology) In constructing various culverts and elevated structures such as underpasses and pileways, various movable inner form devices are used, and the efficiency of construction has been improved.

As this kind of apparatus, for example, Japanese Patent Publication No. 63-51236
As shown in the publication, the inner frame is supported by a supporting frame (cart) on which a caster is mounted, so that the inner frame can be moved and the mold can be set and removed. Is used.

(Problems to be Solved by the Invention) By the way, the above-mentioned bogie has a structure in which a traveling caster is attached to a support at four corners of a support frame, and this support frame is formed by casting concrete. If the culvert or other structure to be constructed is large, it must support a large number of pillars in addition to the four corner pillars and distribute the load to each pillar. No. In this case, it is necessary to provide a means for easily switching the state between the traveling column and the state of supporting a large load on each column.

As a means, a camber or wedge is inserted between the strut and the floor surface when supporting the load of each strut, or a screw jack is provided at the lower end as in a conventional temporary strut, and the like is generally performed. However, in these conventional means, the operation of switching between traveling and supporting the load is troublesome, and the wedges are particularly removed to release the strut under heavy load from the floor surface. The problem is that the operation of loosening the screw and the jack is difficult, which requires a lot of manpower and time, and the advantage of using the movable formwork device is diminished. There is.

In addition, this type of device moves to the construction position along the rail provided on the floor surface and sets the formwork. In this case, the longitudinal positioning of the formwork is determined by the movement position on the rail. However, since the position of the form in the width direction is restricted by the position of the rail facility, the rail facility requires accuracy, and the facility takes a lot of time. If it is found that the facilities of the rails are out of order after the equipment is carried in, reworking the rails requires a lot of trouble and time, which further reduces the work efficiency.

The present invention solves the above-mentioned problems, and enables the operation of switching the state between the traveling movement of each column and the state of supporting the load and the release of the load of the column to be easily performed without requiring a lot of manpower, and a rail. Even if the facilities are incorrect or the rail facilities are out of order, it is possible to easily adjust the position of the formwork in the width direction, thereby improving construction efficiency and economy. It is intended to provide a movable form support.

(Means for Solving the Problems) Regarding the configuration of the present invention for achieving the above object,
The present invention will be described with reference to the drawings corresponding to the embodiments. According to the present invention, columns 2,2,3,3 arranged vertically and horizontally are joined by horizontal frame members 4,4 to form a rectangular box frame 1, At the lower end of each of the struts 2, 3,
One of a pair of levers 11, 12 having one end pivotally attached to one another and the other end connected and separated by a screw rod 17 so as to be freely movable.
1 is equipped with a load release device 6 provided to be tiltable about a horizontal axis 10, and a wheel 26 that rolls in the length direction of the construction structure is adjusted on each corner post 2 of the above-mentioned support column. It is characterized by mounting a caster device 20 that is freely provided, and a caster device 21 that is provided with wheels 26 that roll in the width direction of the construction structure so as to be vertically movable.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes a box frame which forms a frame of the shoring, and corner pillars 2, 2 and middle pillars 3, 3 are arranged vertically and horizontally.
2,3,3 are connected to each other by horizontal frame members 4,4 so that the plane and sides are formed in a rectangular frame shape. 5,5 stringers for installation
Are combined.

A load releasing device 6 using a lever is attached to a lower end of each of the corner pillars 2 and the middle pillars 3 which are constituent members of the box frame 1.

As shown in the enlarged views of FIGS. 5 to 7, the load releasing device 6 has four horizontal pins 9, 9, 10, 10 projecting from support members 7, which are attached to the lower ends of the columns 2, 3, respectively. Universal joint piece 8
Are provided to be tiltable by the opposing pins 9, 9,
A first lever 11 formed in a box shape on the other pins 10, 10 is
A second lever rod 12 formed in a box shape is provided at one end of the lever rod 11 with a horizontal lever 13 traversing the lever rods 11, 12. And is pivotally mounted on the shaft. And the two levers 1
1 and 12, the upper and lower screw holes 14a and 15a are respectively screwed at positions where the distance from the pin 10 to the shaft 13 is longer than the distance from the pin 10 to the other end. 15 to lever 11,1
The two screw holes 14a, 15a are provided in a freely rotatable manner by horizontal pins 16, 16 traversing the direction 2, and the screw directions are opposite to each other. Then, the bridge members 14, 15 of the levers 11, 12
A screw rod 17 provided with screws 17a and 17b whose directions are reversed in both upper and lower halves with a required interval up and down
Of the levers 11, 12 via the bridge members 14, 15 by forward and reverse rotation of
The other end of the lever comes close to and separates from each other,
2 is tilted relatively in the opposite direction about the shaft 13.

Each of the columns 2 and 3 comes into contact with the floor surface via the load release device 6 and receives the load when the concrete is poured. In this case, as shown, the second lever 12
The wooden seats 18, 18 are inserted on both sides of the pin 9 between the lower surface and the floor. Then, by rotating the screw rod 17 in one direction and tilting the other ends of the lever levers 11 and 12 away from each other via the piece members 14 and 15, the support member 7 is moved through the pins 9 and 9. The vertical position of the columns 2 and 3 can be adjusted and set.

Also, on each of the four corner pillars 2 at the four corners, castor devices 20 and 20 for moving the box frame 1 in the longitudinal direction of the construction structure, that is, the longitudinal direction of the box frame 1, and the box frame 1 with the construction structure Are mounted, which are adjustable in the transverse direction of the box frame 1, that is, in the width direction of the box frame 1. The castor devices 20 and 21 have substantially the same configuration. As shown in an enlarged view in FIG. 7, the caster devices 20 and 21 can be vertically adjusted by hydraulic or screw type adjusting jacks 23, respectively. A carriage 25 having wheels 26, 26 provided at the lower end of the provided pillar 24 is detachably mounted with bolts and nuts. And one castor device
20 is mounted on the corner post 2 via brackets 27, 27 so that the wheels 26, 26 roll in the longitudinal direction of the construction structure, and the other castor device 21 Position 26 is such that it rolls in the width direction of the construction structure.
Are mounted via the brackets 27, 27 described above.

The traveling formwork support of the present invention is configured as described above, and the pair of rails 28, 28 laid on the floor of the foundation concrete in the structure to be constructed has one of the castor devices 20, 20. It is mounted via the wheels 26, 26 and travels in the longitudinal direction of the construction structure. Then, the vertical beams 5,5 of the box frame 1
A slab formwork 29 is placed on top of the slab formwork 29.
At both ends, side wall forms 30, 30 are pivotally connected 32, 32 by a telescopic device 31, 31 so as to be able to adjust the tilt, so that a movable inner form device such as a culvert is constituted.

When moving the support of the present invention, as shown in FIGS. 3 and 7, the jack 23 of one castor device 20 is extended, and the entire box frame 1 is lifted up through the corner posts 2, 2. The lower ends of the struts 2 and 3 are lifted, and the seats 18 and 18 are inserted under the load release device 6.
The support with the formwork placed thereon is removed, and the casters are supported by the castor devices 20, 20 to push and run on the rails 28, 28 to move the support to a predetermined enforcement position. At this time, when the position of the formwork placed on the shoring in the width direction of the construction structure is shifted from a predetermined state, as shown in FIGS. 4 and 8,
Short rails 33, 33 for lateral movement in a direction orthogonal to the rail 28 are provided below the other castor devices 21, 21, and the jacks 23 of the castor devices 21, 21 are extended to extend the wheels 26, 21. 26 to Rail 3
3, 33 and one of the castor units 20, 20, jack 2
3, the wheels 26, 26 are lifted from the rails 28, 28, the support is supported by the other castor devices 21, 21, and the support is supported via the wheels 26, 26 on the rails 33, 33. The support is moved upward to adjust the position of the support in the width direction of the construction structure.

In this way, after determining the position of the support, that is, the position of the formwork mounted thereon, the height of the frame 1 is adjusted by operating the jack 23 of the castor devices 21 and 21 to move the slab formwork 29. Set it at the specified height position and rest under each load release device
18 and 18, the screw lever 17 is rotated to press the second lever rod 12 against the seats 18 and 18, and then the jack 2 of each
Shrink 3 to raise wheels 26,26. As a result, each castor device 21 rises from the rails 33, 33, and the struts 2, 3
Are directly supported on the floor via the load release device 6 and the seats 18, 18, respectively. Concrete is poured in that state, and the vertical load accompanying it is
It will be shared by three.

After the hardened concrete has been cast, the formwork 29, 30 is peeled off and moved to the next construction site.
First, the side wall frames 30, 30 are peeled off from the concrete by contracting the expansion / contraction device 31, and then the screw lever 17 of the load release device 6 on each of the columns 2, 3 is rotated to move the first lever rod 11 in FIG. By tilting as shown by the dotted line, the columns 2 and 3 are lowered, the height of the frame 1 is lowered, and the slab formwork 29 is separated from the concrete. In this case, since a large load is applied to the struts 2, 3 by the cast concrete, it is extremely difficult to rotate the jack with the conventional strut provided with a screw jack at the lower end. As described above, the screw rod 17 to be rotated can be easily operated by using a lever.

After the formwork has been peeled from the concrete, the jack 23 of each castor device 20 is extended, and the wheels 26, 26 are placed on the rails 28, 28. With the weight applied, the seats 18, 18 interposed under the columns 2, 3 are removed, and the rails 28, 28 are again moved on the rails 28, toward the next concrete work place. Hereinafter, the above work is repeated to proceed with the construction.

FIGS. 9 and 10 show another embodiment of the load release device 6. FIG. In this embodiment, it is difficult to rotate the screw rod 17 to release the load because the load applied to the columns 2 and 3 is excessive or the distance from the pin 10 to the screw rod 17 is short. It is suitable when it becomes. That is, in this embodiment, as the pin hole for engaging the pins 16 and 16 of the piece member 14 of the first lever 11, the guide hole 34 is formed to be vertically elongated, and the piece member 14 is formed by the guide holes 34 and 34. Are provided so as to be slidable up and down along. That is, the pins 16, 16 of the piece member 14 are provided with up and down play.

In the case of this embodiment, when the load is supported, as shown in FIG.
It is in a state of receiving a load in contact with the upper end of 4,34. Then, when releasing the load, as shown in FIG. 11, an auxiliary jack 35 is inserted under the other end of the first lever rod 11, and the first lever rod 11 is extended by the jack 35 being extended. When the other end of the screw rod 17 is pushed up as shown by the arrow, a large load is not applied to the screw rod 17, and in this state, the screw rod 17 is rotated to position the pins 16, 16 at the lower ends of the guide holes 34, 34. I will do it.
When the jack 35 is shortened, the columns 2, 3 are lowered in a state where there is no resistance of the screw rod 17 by the play of the guide holes 34, 34, and the load can be released. In this case, since the rotation of the screw rod 17 is performed without receiving a large load, the rotation can be extremely easily performed.

(Effects of the Invention) As described above, the form support of the present invention forms a rectangular box frame by connecting columns arranged vertically and horizontally with a horizontal frame member, and forms a rectangular box frame at the lower end of each of the columns. A load release device in which one lever of a pair of levers having one end pivotally attached to each other and the other end thereof connected to and separated from each other by a screw rod so as to be tiltable about a horizontal is mounted, and In each corner pillar in the above support,
A structure equipped with a castor device provided with wheels that roll in the length direction of the construction structure so as to be vertically movable and a caster device provided with wheels that can roll in the width direction of the construction structure so as to be vertically adjustable. Therefore, the following excellent effects can be obtained.

(1) A load release device is provided at the lower end of each column of the box frame, and a caster device that can move up and down is provided at the four corner columns, so that the traveling movement of the support works can be performed smoothly and concrete is poured. In some cases, the large load can be shared and received by each of the columns, and the weight of the shoring can be reduced as a whole.

(2) The switching operation between the traveling movement and the concrete placement can be easily performed.

(3) A large load can be released by placing concrete received on each column by a load release device using a lever, with a simple rotation of the screw rod for releasing the load. Can be improved.

(4) It has a caster device that can run in the length direction and width direction of the construction structure, and each caster device can be adjusted up and down. The movement of the structure in the width direction can be easily adjusted, so that it is not necessary to perform the rail facility accurately, and even if the rail facility becomes inconsistent, it is not necessary to correct the rail facility. The work involved is easy and efficient.

(5) The traveling operation, the width direction adjustment, and the switching operation for concrete placement can be easily performed.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a side view of the same, FIG. 3 is a side view of a main part showing a state during traveling movement, and FIG. FIG. 5 is an enlarged front view showing the load release device, FIG. 6 is a perspective view showing the respective parts separated, FIG. 7 is an enlarged side view showing the castor device, and FIG. Is an enlarged side view showing the state when moving in the same width direction,
FIG. 9 is a front view showing another embodiment of the load release device, and FIG.
FIG. 11 is a perspective view of the first lever rod, and FIG. 11 is a front view showing the state when the load is released. DESCRIPTION OF SYMBOLS 1 ... Box frame, 2 ... Corner pillar 3 ... Middle pillar, 6 ... Load release device 7 ... Support member, 8 ... Universal joint piece 9,10 ... Pin, 11, 12 ... Lever Rod 13 ... Axial rod, 14,15 ... Piece member 16 ... Pin, 17 ... Screw rod 18 ... Stand, 20,21 ... Casting device 22 ... Leg tube, 23 ... Jack 24 ... Pedestal, 25… trolley 26… wheels, 28, 33… rail 34… guide hole, 35… jack

Claims (1)

(57) [Claims] 1. A column box is formed by joining columns arranged vertically and horizontally by a horizontal frame member, and one end is axially attached to the lower end of each of the columns and the other end is screwed. A load release device is provided in which one lever of a pair of levers that are freely connected to and separated from each other by a lever is provided so as to be tiltable about a horizontal axis. It is equipped with a caster device provided with wheels that roll in the length direction so as to be adjustable up and down, and a castor device with wheels that can roll in the width direction of the construction structure that can be adjusted up and down. A traveling formwork supporter.